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<a name="details" id="details"></a><h2 class="groupheader">Overview</h2>
<div class="textblock"><p>This file contains a design example using the <a class="el" href="struct_x_csu_dma.html" title="The XCsuDma driver instance data structure. ">XCsuDma</a> driver in interrupt mode. </p>
<p>It sends data and expects to receive the same data through the device using the local loop back mode.</p>
<dl class="section note"><dt>Note</dt><dd>The example contains an infinite loop such that if interrupts are not working it may hang.</dd></dl>
<pre>
MODIFICATION HISTORY:</pre><pre>Ver   Who     Date     Changes
</p>
<hr/>
<p>
1.0   vnsld  22/10/14 First release
1.2   adk    11/22/17 Added peripheral test app support.
1.4   adk     04/12/17 Added support for PMC DMA.
        adk    11/01/18 Declared static array rather than hard code memory for
                buffers.
      adk    18/01/18 Remove unnecessary column in XIntc_Connect() API.
1.5   adk    09/05/19 Added volatile keyword for DstDone variable to disable
                optimizations.
1.6   hk     11/18/19 Correct Versal INTR definition.
1.9     sk     12/23/20 Add the documentation for <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643" title="This function performs data transfer in loop back mode in interrupt mode and verify the data...">XCsuDma_IntrExample()</a> function
                        parameters to fix the doxygen warning.
1.11    sk     12/20/21 Add interrupt device id support for A78 and R52 processors.
1.14  adk    05/04/23 Added support for system device-tree flow.
</pre> </div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="define-members"></a>
Macros</h2></td></tr>
<tr class="memitem:ae187885a3ceac7f6fbeeef796f2cd075"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#ae187885a3ceac7f6fbeeef796f2cd075">INTG_CSUDMA_INTR_DEVICE_ID</a>&#160;&#160;&#160;XPAR_XCSUDMA_INTR</td></tr>
<tr class="memdesc:ae187885a3ceac7f6fbeeef796f2cd075"><td class="mdescLeft">&#160;</td><td class="mdescRight">Interrupt device ID of CSU DMA device ID.  <a href="#ae187885a3ceac7f6fbeeef796f2cd075">More...</a><br/></td></tr>
<tr class="separator:ae187885a3ceac7f6fbeeef796f2cd075"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a1dac2e3409004e3277582a4066239395"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a1dac2e3409004e3277582a4066239395">CSU_SSS_CONFIG_OFFSET</a>&#160;&#160;&#160;0x008</td></tr>
<tr class="memdesc:a1dac2e3409004e3277582a4066239395"><td class="mdescLeft">&#160;</td><td class="mdescRight">CSU SSS_CFG Offset.  <a href="#a1dac2e3409004e3277582a4066239395">More...</a><br/></td></tr>
<tr class="separator:a1dac2e3409004e3277582a4066239395"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a36650147b2834be4261c304cbb5acbfb"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a36650147b2834be4261c304cbb5acbfb">CSUDMA_LOOPBACK_CFG</a>&#160;&#160;&#160;0x00000050</td></tr>
<tr class="memdesc:a36650147b2834be4261c304cbb5acbfb"><td class="mdescLeft">&#160;</td><td class="mdescRight">LOOP BACK configuration macro.  <a href="#a36650147b2834be4261c304cbb5acbfb">More...</a><br/></td></tr>
<tr class="separator:a36650147b2834be4261c304cbb5acbfb"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7a41b6cbdc050339c46b3ad81bf9d5f0"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a7a41b6cbdc050339c46b3ad81bf9d5f0">PMC_SSS_CONFIG_OFFSET</a>&#160;&#160;&#160;0x500</td></tr>
<tr class="memdesc:a7a41b6cbdc050339c46b3ad81bf9d5f0"><td class="mdescLeft">&#160;</td><td class="mdescRight">CSU SSS_CFG Offset.  <a href="#a7a41b6cbdc050339c46b3ad81bf9d5f0">More...</a><br/></td></tr>
<tr class="separator:a7a41b6cbdc050339c46b3ad81bf9d5f0"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9be00cc50ff004d20e27675fc9d00709"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a9be00cc50ff004d20e27675fc9d00709">PMCDMA0_LOOPBACK_CFG</a>&#160;&#160;&#160;0x0000000D</td></tr>
<tr class="memdesc:a9be00cc50ff004d20e27675fc9d00709"><td class="mdescLeft">&#160;</td><td class="mdescRight">LOOP BACK configuration macro for PMCDMA0.  <a href="#a9be00cc50ff004d20e27675fc9d00709">More...</a><br/></td></tr>
<tr class="separator:a9be00cc50ff004d20e27675fc9d00709"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac52f2e0501f3f595e3b8e92c12142f57"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#ac52f2e0501f3f595e3b8e92c12142f57">PMCDMA1_LOOPBACK_CFG</a>&#160;&#160;&#160;0x00000090</td></tr>
<tr class="memdesc:ac52f2e0501f3f595e3b8e92c12142f57"><td class="mdescLeft">&#160;</td><td class="mdescRight">LOOP BACK configuration macro for PMCDMA1.  <a href="#ac52f2e0501f3f595e3b8e92c12142f57">More...</a><br/></td></tr>
<tr class="separator:ac52f2e0501f3f595e3b8e92c12142f57"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a70ed59adcb4159ac551058053e649640"><td class="memItemLeft" align="right" valign="top">#define&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a70ed59adcb4159ac551058053e649640">SIZE</a>&#160;&#160;&#160;0x100</td></tr>
<tr class="memdesc:a70ed59adcb4159ac551058053e649640"><td class="mdescLeft">&#160;</td><td class="mdescRight">Size of the data to be transferred.  <a href="#a70ed59adcb4159ac551058053e649640">More...</a><br/></td></tr>
<tr class="separator:a70ed59adcb4159ac551058053e649640"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a4824587b357202b3fcb4e4f570d48954"><td class="memItemLeft" align="right" valign="top">u32 DstBuf[<a class="el" href="xcsudma__polled__example_8c.html#a70ed59adcb4159ac551058053e649640">SIZE</a>]&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a4824587b357202b3fcb4e4f570d48954">__attribute__</a> ((aligned(64)))</td></tr>
<tr class="memdesc:a4824587b357202b3fcb4e4f570d48954"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destination buffer.  <a href="#a4824587b357202b3fcb4e4f570d48954">More...</a><br/></td></tr>
<tr class="separator:a4824587b357202b3fcb4e4f570d48954"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae07b94c3ade7479c4ec8dfec3bb4d643"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample</a> (INTC *IntcInstancePtr, <a class="el" href="struct_x_csu_dma.html">XCsuDma</a> *CsuDmaInstance, u16 DeviceId, u16 IntrId)</td></tr>
<tr class="memdesc:ae07b94c3ade7479c4ec8dfec3bb4d643"><td class="mdescLeft">&#160;</td><td class="mdescRight">This function performs data transfer in loop back mode in interrupt mode and verify the data.  <a href="#ae07b94c3ade7479c4ec8dfec3bb4d643">More...</a><br/></td></tr>
<tr class="separator:ae07b94c3ade7479c4ec8dfec3bb4d643"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aa2c2d73f33aa4a715c8b8b3c0c01ada6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#aa2c2d73f33aa4a715c8b8b3c0c01ada6">IntrHandler</a> (void *CallBackRef)</td></tr>
<tr class="memdesc:aa2c2d73f33aa4a715c8b8b3c0c01ada6"><td class="mdescLeft">&#160;</td><td class="mdescRight">This function is the interrupt handler for the CSU_DMA driver.  <a href="#aa2c2d73f33aa4a715c8b8b3c0c01ada6">More...</a><br/></td></tr>
<tr class="separator:aa2c2d73f33aa4a715c8b8b3c0c01ada6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a840291bc02cba5474a4cb46a9b9566fe"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a840291bc02cba5474a4cb46a9b9566fe">main</a> (void)</td></tr>
<tr class="memdesc:a840291bc02cba5474a4cb46a9b9566fe"><td class="mdescLeft">&#160;</td><td class="mdescRight">Main function to call the example.  <a href="#a840291bc02cba5474a4cb46a9b9566fe">More...</a><br/></td></tr>
<tr class="separator:a840291bc02cba5474a4cb46a9b9566fe"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a>
Variables</h2></td></tr>
<tr class="memitem:a6ac1478432df4951ce8f0fc753bb652d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="struct_x_csu_dma.html">XCsuDma</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="xcsudma__intr__example_8c.html#a6ac1478432df4951ce8f0fc753bb652d">CsuDma</a></td></tr>
<tr class="memdesc:a6ac1478432df4951ce8f0fc753bb652d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Instance of the Csu_Dma Device.  <a href="#a6ac1478432df4951ce8f0fc753bb652d">More...</a><br/></td></tr>
<tr class="separator:a6ac1478432df4951ce8f0fc753bb652d"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<h2 class="groupheader">Macro Definition Documentation</h2>
<a class="anchor" id="a1dac2e3409004e3277582a4066239395"></a>
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          <td class="memname">#define CSU_SSS_CONFIG_OFFSET&#160;&#160;&#160;0x008</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>CSU SSS_CFG Offset. </p>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

</div>
</div>
<a class="anchor" id="a36650147b2834be4261c304cbb5acbfb"></a>
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          <td class="memname">#define CSUDMA_LOOPBACK_CFG&#160;&#160;&#160;0x00000050</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>LOOP BACK configuration macro. </p>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

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</div>
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          <td class="memname">#define INTG_CSUDMA_INTR_DEVICE_ID&#160;&#160;&#160;XPAR_XCSUDMA_INTR</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Interrupt device ID of CSU DMA device ID. </p>

</div>
</div>
<a class="anchor" id="a7a41b6cbdc050339c46b3ad81bf9d5f0"></a>
<div class="memitem">
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          <td class="memname">#define PMC_SSS_CONFIG_OFFSET&#160;&#160;&#160;0x500</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>CSU SSS_CFG Offset. </p>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

</div>
</div>
<a class="anchor" id="a9be00cc50ff004d20e27675fc9d00709"></a>
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          <td class="memname">#define PMCDMA0_LOOPBACK_CFG&#160;&#160;&#160;0x0000000D</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>LOOP BACK configuration macro for PMCDMA0. </p>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

</div>
</div>
<a class="anchor" id="ac52f2e0501f3f595e3b8e92c12142f57"></a>
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          <td class="memname">#define PMCDMA1_LOOPBACK_CFG&#160;&#160;&#160;0x00000090</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>LOOP BACK configuration macro for PMCDMA1. </p>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

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</div>
<a class="anchor" id="a70ed59adcb4159ac551058053e649640"></a>
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">#define SIZE&#160;&#160;&#160;0x100</td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Size of the data to be transferred. </p>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

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</div>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="a4824587b357202b3fcb4e4f570d48954"></a>
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          <td class="memname">u32 DstBuf [<a class="el" href="xcsudma__polled__example_8c.html#a70ed59adcb4159ac551058053e649640">SIZE</a>] __attribute__ </td>
          <td>(</td>
          <td class="paramtype">(aligned(64))&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Destination buffer. </p>
<p>Source buffer. </p>

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          <td class="memname">void IntrHandler </td>
          <td>(</td>
          <td class="paramtype">void *&#160;</td>
          <td class="paramname"><em>CallBackRef</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>This function is the interrupt handler for the CSU_DMA driver. </p>
<p>This handler reads the interrupt status from the Status register, determines the source of the interrupts, calls according callbacks, and finally clears the interrupts.</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">CallBackRef</td><td>is the callback reference passed from the interrupt handler, which in our case is a pointer to the driver instance.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>None.</dd></dl>
<dl class="section note"><dt>Note</dt><dd>None. </dd></dl>

<p>Referenced by <a class="el" href="xcsudma__intr__example_8c.html#ae07b94c3ade7479c4ec8dfec3bb4d643">XCsuDma_IntrExample()</a>.</p>

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          <td class="memname">int main </td>
          <td>(</td>
          <td class="paramtype">void&#160;</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Main function to call the example. </p>
<dl class="section return"><dt>Returns</dt><dd><ul>
<li>XST_SUCCESS if successful.</li>
<li>XST_FAILURE if failed.</li>
</ul>
</dd></dl>
<dl class="section note"><dt>Note</dt><dd>None. </dd></dl>

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          <td class="memname">int XCsuDma_IntrExample </td>
          <td>(</td>
          <td class="paramtype">INTC *&#160;</td>
          <td class="paramname"><em>IntcInstancePtr</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="struct_x_csu_dma.html">XCsuDma</a> *&#160;</td>
          <td class="paramname"><em>CsuDmaInstance</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">u16&#160;</td>
          <td class="paramname"><em>DeviceId</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">u16&#160;</td>
          <td class="paramname"><em>IntrId</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>This function performs data transfer in loop back mode in interrupt mode and verify the data. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">IntcInstancePtr</td><td>is a pointer to the instance of the INTC. </td></tr>
    <tr><td class="paramname">CsuDmaInstance</td><td>contains a pointer to the CSU DMA instance which is going to be connected to the interrupt controller. </td></tr>
    <tr><td class="paramname">DeviceId</td><td>is the XPAR_&lt;CSUDMA Instance&gt;_DEVICE_ID macro value. </td></tr>
    <tr><td class="paramname">IntrId</td><td>is the interrupt Id and is typically XPAR_&lt;CSUDMA_instance&gt;_INTR macro value.</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd><ul>
<li>XST_SUCCESS if successful.</li>
<li>XST_FAILURE if failed.</li>
</ul>
</dd></dl>
<dl class="section note"><dt>Note</dt><dd>None. </dd></dl>

<p>References <a class="el" href="struct_x_csu_dma___config.html#a85e9f7798c5aa5ad4fbc9a8d0ba62990">XCsuDma_Config::BaseAddress</a>, <a class="el" href="struct_x_csu_dma.html#ab64e65f366955cbbc63436336de5ac48">XCsuDma::Config</a>, <a class="el" href="xcsudma__intr__example_8c.html#a1dac2e3409004e3277582a4066239395">CSU_SSS_CONFIG_OFFSET</a>, <a class="el" href="xcsudma__intr__example_8c.html#a36650147b2834be4261c304cbb5acbfb">CSUDMA_LOOPBACK_CFG</a>, <a class="el" href="struct_x_csu_dma___config.html#a8bb59cb926fea92ce59604ca3423e505">XCsuDma_Config::DmaType</a>, <a class="el" href="xcsudma__intr__example_8c.html#aa2c2d73f33aa4a715c8b8b3c0c01ada6">IntrHandler()</a>, <a class="el" href="xcsudma__intr__example_8c.html#a7a41b6cbdc050339c46b3ad81bf9d5f0">PMC_SSS_CONFIG_OFFSET</a>, <a class="el" href="xcsudma__intr__example_8c.html#a9be00cc50ff004d20e27675fc9d00709">PMCDMA0_LOOPBACK_CFG</a>, <a class="el" href="xcsudma__intr__example_8c.html#ac52f2e0501f3f595e3b8e92c12142f57">PMCDMA1_LOOPBACK_CFG</a>, <a class="el" href="xcsudma__intr__example_8c.html#a70ed59adcb4159ac551058053e649640">SIZE</a>, <a class="el" href="group__csuma__api.html#gad0f7217bd295de82623179efb34adb96">XCsuDma_CfgInitialize()</a>, <a class="el" href="group__csuma__api.html#gadf3599e4d07ef05586a217ebbbd02999">XCsuDma_DisableIntr()</a>, <a class="el" href="xcsudma_8h.html#a8f5460a8a6a1848b2c4c2988f7428e73">XCSUDMA_DMATYPEIS_CSUDMA</a>, <a class="el" href="xcsudma_8h.html#af785114e3c13162c421d9e996904439d">XCSUDMA_DMATYPEIS_PMCDMA0</a>, <a class="el" href="group__csuma__api.html#gga46008337fdd632f2650b8727c305eba5a08d300b013b7169bd1475fdf04737fe4">XCSUDMA_DST_CHANNEL</a>, <a class="el" href="group__csuma__api.html#gad892a65e65ac14f48f7d7f53020511cf">XCsuDma_EnableIntr()</a>, <a class="el" href="group__csuma__api.html#ga1db5eabd96920efb06fb03c919420601">XCsuDma_IntrClear()</a>, <a class="el" href="group__csuma__api.html#ga0dbd333c70de601e769b8542552eb7e4">XCSUDMA_IXR_DONE_MASK</a>, <a class="el" href="group__csuma__api.html#ga9b921be4bb07b632d2dfd8ac34c30fb8">XCsuDma_LookupConfig()</a>, <a class="el" href="group__csuma__api.html#ga774ab551d0ef59fd880ff834f2d83804">XCsuDma_SelfTest()</a>, <a class="el" href="group__csuma__api.html#gga46008337fdd632f2650b8727c305eba5afe0a7c4c64751afddad37c4a15a00e0d">XCSUDMA_SRC_CHANNEL</a>, and <a class="el" href="group__csuma__api.html#gacf79144df19e9cd4116dd9f507037ff1">XCsuDma_Transfer()</a>.</p>

</div>
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<h2 class="groupheader">Variable Documentation</h2>
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<p>Instance of the Csu_Dma Device. </p>

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